Protective cosmetic



Patented Nov.

UNITED S P I O E "mm anat'gmfib I.

Samuel Isermann, Summit, Ernst ohlsson, Jersey City, and John W. Orelup, Summit, N. J.

No Drawing. Application September 13,- 1935,

. Serial No. 40,434 I v a '3 Claims (01. 167-90) Our present invention relates to improvements in protective cosmetics. In our co-pending ap plication Serial No. 22,780 we have set forth the problem involved which is to devise a protective 5 cosmetic which will be efiective in small concentrations to filter out the ultra-violet radiation or sun radiation especially between 2900 and 4500 Angstronunits an'd whichshall be without toxic .or irritating effect on the skin. .It is alsodesir- 1o able that the compound be oil soluble and preferably without appreciable staining or tinctorial power. I In our previous application we have mentioned the use of a filter oi Eiused calcium phosphate l5 colored with oxides of nickel and cobalt through which only physiologically active rays can pass and by means of which the testing of various materials for the purpose is facilitated.

we have now discovered that the class or organic compounds ponsistin'g of two benzene rings connected by chains containing one or more unsaturated bonds with city or 0x0 groups are of a class of organic compounds consisting of two v benzene rings connected by chains of at least three carbon atoms having one or more unsaturated bonds therein, but without oxy or 0x0 groups are also of high efllcacy as filters of ultra violet light in the same region. As examples of such compoundsmay be mentionedz.

' Cinnamal ac'etophenon which may be obtained by condensing cinnamic aldehyde and; phenyl methyl ketone i. e.

Dibenzal acetone 5Q .CBHE C H=CHCO CH= CH' CIHB which may be obtained by condensing two moles.

of benzaldehyde with one mole oi acetone 1. e. ctns-cnowm-co-cmonc-cqns-i Various useful compounds maybe obtained by condensing an aromatic aldehyde with a dibasic acid, as for example phenylacetaldehyde and succinic acid to produce dibenzyl butadiene C6H5'CH2CHO+HOOC'CH2'CH2'COOH+ 5 2COa+2H2O+CoHs-CHz-QH=CH-CH= I v CH-CHz-Col-Is (dibenzylbutadiene).

The above compounds are practically odorless," m are not irritating to the 'skinand are effective in concentrations of 1% or less.

The preparation used may be mixed with Various other ingredients for producing a cosmetic as illustrated by the following examples.

- L A preparation of the consistency of cream may be compounded as follows:

Di ethylene glycol mono stearate 48 'Cetyl alcohol a 20 m White wax v '4 Mineral oil '8' Lanolin 6. White vaseline f.'. 3 Lanolin alcohols 3 Phenyl benzoyl butadiene (einnamailden acetophenon) or other active ingredient as above set forth 1 Intramine (sodium salt of sulphated- 'colla-i mine of iatty acid) --'-a-.

The above quantities may bevarled more or less. Certain of the various ingredientsserve as w I oi the skin) has restorative properties whereby I use of the preparation not merely protects against ultra-violet light but is in addition a valuable cleansing and emollient preparation. l v2. Any 01 the 'activelngredients above setforth may be incorporated in an oil as by'compounding 1% or the active substance with say 19% of a vegetable oil such as'peanut oil and 50 80% of mineral oil- We claim:

1. A cosmetic eflectiveiu thin films" to retard ultra violet light absorption containing as an active ingredient ciunamal acetophenon in a ve taining as an active ingredient a compound selected from the iollowinazroup: cinnamal acetophenon and dibenzal acetone, in a vehicle capable of application to the skin, said active ingredient being present in an amount not substantially greater than 1% and being characterized by relative permanency, non-irritation and substantial lack of color and odor.

SAMUEL ISERMANN. J. W. ORELUP.

ERNST OHLSSON. 

